• WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
  • Free & Local Shipping
    Free & Local Shipping
  • VAT Included
    VAT Included
  • 5+2 Years Warranty
    5+2 Years Warranty
  • 24/7 Customer Support
    24/7 Customer Support
Payment Method
  • Accepts PayPal Payment
  • Accepts Klarna  Payment
  • Accepts Visa Payment
  • Accepts MasterCard Payment
  • Accepts Shop Pay Payment
  • Accepts American Express Payment
  • Accepts iDeal payment
  • Accepts Bancontact Payment
  • Accepts Apple Pay Payment
  • Accepts Google Pay Payment
  • Accepts Union Pay Payment
NEW

WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating

€639,99 EUR€799,99 EUR
Start Your Engine. Power Your Time Afloat.
  • 2-in-1 design combines engine starting and deep-cycle onboard power.
  • 1800 CCA rated starting capability for compatible 12V marine engines.
  • 314Ah capacity with approximately 4019Wh nominal energy.
  • 200A BMS supports demanding onboard electrical loads.
  • 200A continuous discharge, equivalent to 2560W DC at nominal voltage.
  • L520 × W240 × H220 mm, approximately 30kg.
  • Integrated self-heating supports cold-weather battery management.
  • Bluetooth monitoring through the WattCycle App.
  • IP65-rated enclosure for a protected onboard installation.
  • Standalone use only — series and parallel connections are not supported
View More
Options
  • Free & Fast Shipping: Enjoy free shipping on your orders. The estimated shipping time varies by country. More information on Shipping Policy
  • Poland Local Warehouse: Orders are dispatched directly from our Local Poland Warehouse.
  • Instant Savings via Local Pickup: Contact us to pick up at our Polish warehouse for exclusive savings and avoid courier wait times.
  • Canary Islands (Spain) Shipping: You can shop our full range with ease via the GUANXE.COM App.

Shop with 100% confidence. We’ve removed all the risk.

  • xCotton Shipping Protection: Peace of mind is built in. Opt for xCotton Protection at checkout to safeguard your investment against loss, damage, or theft.
  • Zero-Cost Returns: If you aren’t completely satisfied, returns and exchanges are 100% FREE when your order is protected by xCotton. No hidden fees, no stress.
  • Learn more about xCotton Shipping Protection
  • Free & Local Shipping
    Free & Local Shipping
  • VAT Included
    VAT Included
  • 5+2 Years Warranty
    5+2 Years Warranty
  • 24/7 Customer Support
    24/7 Customer Support
Payment Method
  • Accepts PayPal Payment
  • Accepts Klarna  Payment
  • Accepts Visa Payment
  • Accepts MasterCard Payment
  • Accepts Shop Pay Payment
  • Accepts American Express Payment
  • Accepts iDeal payment
  • Accepts Bancontact Payment
  • Accepts Apple Pay Payment
  • Accepts Google Pay Payment
  • Accepts Union Pay Payment
WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
WattCycle 12V 314Ah Dual Purpose Marine Cranking Battery with Bluetooth & Self-heating
€639,99 EUR
€799,99 EUR

Start Your Engine. Power Your Day Afloat

The WattCycle 12V 314Ah combines 1800 CCA engine-starting capability with 4019Wh of nominal energy in one LiFePO4 battery. Start your compatible boat engine, head towards your favourite fishing spot, and power onboard electronics while you enjoy your time on the water.

1800 CCA to Start, 314Ah to Stay

Engine starting and onboard power serve different needs. This battery brings them together with 1800 CCA starting capability and 4019Wh deep-cycle energy. Start your compatible engine for the journey out, then supply fish finders, navigation equipment and lighting while you fish, explore or relax onboard.

One Battery, More Possibilities Onboard

Bring 314Ah capacity, a 200A BMS, Bluetooth monitoring and self-heating aboard in one approximately 30kg battery. From early-morning departures to quiet afternoons at anchor, this dual-purpose design combines starting capability, deep-cycle power and convenient battery monitoring for your boating routine.

1800 CCA for Multi-Brand Outboard Setups

With 1800 CCA starting capability, the WattCycle 12V 314Ah exceeds the 245–1000 CCA reference requirements shown for Mercury, Yamaha, Suzuki and Evinrude models. For compatible lithium-approved installations, combine engine starting with 314Ah deep-cycle capacity to power onboard electronics from your morning departure to your final fishing stop.

4.02kWh for Your Time on the Water

With approximately 4.02kWh of nominal energy, build your onboard power plan around the equipment you use most. Supply compatible 12V trolling motors, fish finders, navigation systems and boat lights—from positioning over a promising fishing spot to keeping essential electronics running throughout your outing.

60kg Less Weight. Two Marine Power Functions

At approximately 30kg, the WattCycle 12V 314Ah weighs 67% less than the illustrated 90kg lead-acid setup, reducing onboard battery weight by 60kg. Combine 1800 CCA starting capability with 4019Wh of nominal energy in one LiFePO4 battery, supporting compatible engine starting and onboard electronics while leaving more weight allowance for fishing gear.

IP65 Protection for Life Onboard

The WattCycle 12V 314Ah features an IP65-rated enclosure for dust protection and resistance to water jets, helping protect your battery from airborne dust, rain and splashes. From lakeside fishing trips to coastal outings, its protective enclosure supports everyday use in a sheltered onboard installation.

One Battery for Starting and Life Onboard

From centre-console boats to deep-V fishing craft, compatible 12V setups can benefit from 314Ah capacity and dual-purpose functionality. Combine engine starting with power for onboard electronics, whether your day takes you across a quiet lake, between fishing spots or out for a leisurely coastal trip.

Tech Specifications

General

Battery Technology LiFePO4
Dimensions L520 x W240 x H220mm
Weight 30kg
Self-heating Yes
Terminals M8 Bolts
Casing Material ABS
Waterproof Rating IP65
Hazard class 9
Warranty 5 Years

Technical Data

Nominal Voltage 12,8V
Nominal/Usable Capacity 314Ah
Energy 4019Wh
Cell Balancing Yes, passive balancing
Bluetooth Yes, Bluetooth 5.0
Monthly Self Discharge ≤3%/Month
Series & Parallel Configurations Does not support connecting in parallel or series

BMS

BMS 200A
Max. Continuous Output Power 2560W
Overall Over-Charge Detection Voltage 14,4±0,2V
Overall Over-Discharge Detection Voltage 10±0,2V
Standard Continuous Charge Current 62.8A (0.2C)
Max. Continuous Charge/Discharge Current 200A (1C)
Cold Cranking Amps 1800A
1st Discharge Over-Current 320A±20A @ 60±10s
2nd Discharge Over-Current 1320A±262A @ 1,28±0,48s
BMS High Temperature Cut-Off Charge: 75℃±3℃
Discharge: 85℃±3℃
BMS Low Temperature Cut-Off Charge: 0℃±3℃
Discharge: - 40℃±5℃
High Temperature Recovery Charge: 65℃±3℃
Discharge: 75℃±3℃
Low Temperature Recovery Charge: 5℃±3℃
Discharge: -10℃±3℃

Temperature Range

Charging Temperature 0℃-75℃
Discharging Temperature -40℃-85℃
Storage Temperature 0℃-45℃

Package Content

    Documents

    Frequently Asked Questions

    Yes, it is a dual-purpose battery intended to combine compatible engine starting with a deep-cycle onboard supply. Plan both uses together and retain sufficient charge for restarting.

    No. The manufacturer’s 1800 CCA rating is a starting specification, not universal engine approval. 

    Only through a compatible, approved charging arrangement. Have the alternator and regulation system assessed before installation; do not assume an existing lead-acid charging setup is automatically suitable.

    Please use a delicate LiFePO4 battery charger. 

    Runtime depends on total load and the energy allocated to it.
    For example, approximately 4019Wh × 80% allocation × 90% efficiency ÷ 500W gives about 5.8 hours. 
    This is an illustrative estimate, with starting reserve and actual operating conditions still to be considered.

    No! This battery is a start battery and is not designed to connect in series or parallel.

    The supplied specification states IP65. Do not treat that as permission for immersion or continuous seawater exposure. Install the battery in a protected compartment and keep the terminals appropriately protected.

    Use its Bluetooth connection with the WattCycle App to view supported battery information. You can check voltage, current, and power. 

    Yes, it can support a compatible 12V trolling motor. You can provide your motor’s voltage, maximum draw and startup demand to us and we will help check. Kindly note that a single 12V battery cannot directly supply a 24V or 36V motor.

    Yes, when the battery temperature falls below 0°C and a charging source is connected, the heating system automatically warms the cells before normal charging begins. Once the battery temperature rises above approximately 5°C, charging can resume.

    WattCycle Battery Reviews